mirror of
https://github.com/andwati/dotfiles.git
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andwati
36f0caa66e
Adds a TUI-driven, rollback-capable installer (install/install.sh + install/modules/*.sh) covering JS/Python/systems toolchains, dev tooling, browsers, chat apps, GNOME extras, and misc setup (wakatime key, ssh/gpg perms, apt mirror benchmarking), all sourced from each vendor's official install method. bootstrap.sh stows the zsh/git/tmux/vscode dotfiles and runs the installer; desnap.sh purges snapd and replaces default snaps with apt/Flatpak equivalents.
80 lines
2.6 KiB
Bash
80 lines
2.6 KiB
Bash
install_mirrors() {
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local codename
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codename=$(ubuntu_codename)
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local candidates
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candidates=$(curl -fsSL --max-time 5 https://mirrors.ubuntu.com/mirrors.txt) || {
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err "could not fetch the official Ubuntu mirror list"
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return 1
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}
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log "benchmarking mirrors for speed + freshness (this takes a few seconds)"
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local best_url="" best_time="" url resp t last_modified age_hours checked=0
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while IFS= read -r url; do
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if [[ -z "$url" || "$url" == \#* ]]; then continue; fi
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if [[ $checked -ge 12 ]]; then break; fi
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checked=$((checked + 1))
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resp=$(curl -o /dev/null -sD - --max-time 3 -w '\n%{time_total}' "${url}dists/${codename}/Release" 2>/dev/null) || continue
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if [[ -z "$resp" ]]; then continue; fi
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t=$(tail -n1 <<< "$resp")
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if [[ -z "$t" ]]; then continue; fi
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last_modified=$(grep -i '^Last-Modified:' <<< "$resp" | head -n1 | cut -d' ' -f2- | tr -d '\r')
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if [[ -n "$last_modified" ]]; then
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age_hours=$(( ($(date +%s) - $(date -d "$last_modified" +%s 2>/dev/null || echo 0)) / 3600 ))
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if [[ $age_hours -gt 72 ]]; then continue; fi
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fi
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if [[ -z "$best_time" ]] || awk -v a="$t" -v b="$best_time" 'BEGIN{exit !(a<b)}'; then
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best_time="$t"
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best_url="$url"
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fi
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done <<< "$candidates"
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if [[ -z "$best_url" ]]; then
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warn "no mirror passed the speed/freshness check, leaving apt sources untouched"
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return 0
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fi
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ok "fastest fresh mirror: $best_url (${best_time}s)"
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_mirrors_apply "$best_url"
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}
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# Rewrites whichever apt sources format is in use to point at the chosen
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# mirror. Ubuntu 24.04+ (and 26.04) default to the deb822
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# /etc/apt/sources.list.d/ubuntu.sources file; older installs still use the
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# one-line-per-entry /etc/apt/sources.list. security.ubuntu.com is left
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# alone on purpose — security updates stay on Canonical's own CDN.
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_mirrors_apply() {
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local mirror="${1%/}"
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local deb822="/etc/apt/sources.list.d/ubuntu.sources"
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local legacy="/etc/apt/sources.list"
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local target="" backup=""
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if [[ -f "$deb822" ]]; then
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target="$deb822"
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elif [[ -f "$legacy" ]] && grep -q archive.ubuntu.com "$legacy"; then
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target="$legacy"
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else
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warn "no recognized apt sources file found, skipping"
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return 0
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fi
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backup="${target}.bak.$$"
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sudo cp "$target" "$backup"
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rollback_push "sudo mv '$backup' '$target'; apt_invalidate"
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sudo sed -i -E "s#https?://[a-zA-Z0-9.-]*archive\.ubuntu\.com/ubuntu#${mirror}#g" "$target"
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apt_invalidate
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if ! apt_update_once; then
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err "apt update failed against $mirror"
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return 1
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fi
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sudo rm -f "$backup"
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ok "apt now points at $mirror"
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}
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